WO2017152973A1

WO2017152973A1 - Surface cleaning machine

Info

Publication number: WO2017152973A1
Application number: PCT/EP2016/055046
Authority: WO
Inventors: Christoph RUFENACH; Tobias Palmer
Original assignee: Alfred Kärcher Gmbh & Co. Kg
Priority date: 2016-03-09
Filing date: 2016-03-09
Publication date: 2017-09-14
Also published as: PL3426122T3; EP3426122A1; US11058274B2; CN109068924A; CN109068924B; EP3426122B1; CN114403756A; US20190000292A1

Abstract

The invention relates to a surface cleaning machine, which comprises an appliance body (12) and a cleaning head (14) that is arranged on the appliance body (12), wherein at least one driven cleaning roll unit (18) is positioned on the cleaning head (14) and a dirty fluid tank device (66) is arranged on the cleaning head (14), and a drive motor (28), wherein the at least one cleaning roll unit (18) is assigned a stripper guide device (142) which acts on the at least one cleaning roll unit (18), wherein the stripper guide device (142) is arranged on an inlet opening (144) of the dirty fluid tank device (66), and wherein the stripper guide device (142) is arranged and formed such that dirty fluid from the at least one cleaning roll unit (18) can be coupled into the dirty fluid tank device (66) via the inlet opening (144) of the dirty fluid tank device (66) without a suction fan.

Description

Surface cleaning machine

The invention relates to a surface cleaning machine, comprising a device body, a cleaning head, which is arranged on the device body, wherein at least one driven cleaning roller unit is positioned on the cleaning head and on the cleaning head a Schmutzfluidtankeinrichtung is arranged, and a drive motor. From WO2010 / 041185 AI a surface cleaning machine with rotating brushes is known.

From US 7,665,174 B2, a cleaning head for a floor cleaning machine is known.

From US 4,173,054 a floor cleaner is known which comprises a handle, a main body, a roller mechanism with a roller with a cleaning belt, a scraper and a dirt fluid pickup. From WO 2013/106762 A2 a surface cleaning machine with a cleaning roller and a drive unit for driving the cleaning roller is known. There is provided a dirt tray into which the cleaning roller rotates during rotation. The dirt tray can be opened.

US Pat. No. 7,921,497 B2 discloses a floor scrubber which is manually operated and comprises a drive roller which is coupled to a scrub roller. From the non-prepublished applications PCT / EP2015 / 073275,

PCT / EP2015 / 072929, PCT / EP2015 / 073529, PCT / EP2015 / 073116,

PCT / EP2015 / 073478 surface cleaning machines are known. From the Non-prepublished PCT / EP2015 / 073315 also discloses a surface cleaning machine.

The invention has for its object to provide a surface cleaning machine mentioned above, which is structurally simple and has advantageous operating characteristics.

This object is achieved according to the invention in the surface cleaning machine mentioned above in that the at least one cleaning roller unit is associated with a stripping guide, which acts on the at least one cleaning roller unit, that the stripping guide is arranged at an inlet mouth of the dirty fluid tank means, and in that the stripping guide device is arranged and designed in such a way that dirt fluid can be introduced from the at least one cleaning roller unit via the inlet mouth of the dirty fluid tank device into the dirty fluid tank device without suction fan.

By means of the wiping guide, dirt fluid can be released from the at least one cleaning roller unit, in particular via a wiping effect. Dissolved dirt fluid can then be directed via the wiper guide in the Schmutzfluidtankeinrichtung.

The dirty fluid tank device is then arranged so that dirt fluid released from the at least one cleaning roller unit can get into the dirty fluid tank device while minimizing the corresponding transport path.

The corresponding surface cleaning machine can be formed without a suction fan. It can be realized in a structurally simple manner with low weight.

There are no lines for negative pressure of the cleaning roller unit are provided for the extraction of dirt fluid. Farther the surface cleaning machine has no additional consumer (namely a suction fan). There is no need to provide a separator. As a result, it can be operated in an energy-saving manner and in particular operate advantageously via a battery device and in particular a rechargeable battery device.

Furthermore, a self-cleaning effect for the at least one cleaning roller unit can be achieved to a certain extent by the wiping guide.

During operation of the surface cleaning machine, the at least one driven cleaning roller unit (which in particular can additionally be moistened) acts on a surface to be cleaned. The driven cleaning roller unit performs a wiping movement, so that the force required for a cleaning process for an operator is lowered.

Furthermore, dirt fluid is picked up by the cleaning roller unit and delivered to the dirty fluid tank device. An operator therefore does not come into contact with dirt fluid.

A cleaning roller unit is in particular a one-piece cleaning roller or a multi-part cleaning roller with the same axis of rotation for all parts. It is favorable if the scraper guide device is arranged and designed in such a way that dirt fluid, which has been taken up by the at least one cleaning roller unit, is stripped off by the scraper guide device from the at least one cleaning roller unit and into which

Schmutzfluidtankeinrichtung is directed. It follows a replacement of

Dirt fluid by stripping. The guide provides for delivery to the dirty fluid tank means. For example, at least in part, the baffle may be slopped and spun for example, provide under the effect of centrifugal force in the Schmutzfiuidtankeinrichtung.

Conveniently, based on a direction of rotation of the at least one cleaning roller unit, the stripping guide of the inlet mouth ordered. As a result, the wiping guide device can detach dirt fluid from the cleaning roller unit, in particular by wiping action, and direct it to the inlet opening. For example, the wiper guide forms a wall of the inlet mouth.

Furthermore, it is favorable if the stripping guide device is arranged and designed so that dirt fluid is detached from the at least one cleaning roller unit by stripping. This results in a simple Zuführbarkeit of dirt fluid to the Schmutzfiuidtankeinrichtung.

It is particularly advantageous if the wiping guide protrudes into a trimming of the at least one cleaning roller unit. As a result, dirt fluid can be stripped off the at least one cleaning roller unit via the wiping guide.

In particular, the stripping guide protrudes at a depth of at least 5% of a thickness of the trim in the trimming of the at least one cleaning roller unit, based on a wet trimming. The protrude results in a wiping effect. If the wiping guide does not protrude too deep into the trimming of the at least one cleaning roller unit, then the rotation of the at least one cleaning roller unit is not excessively impeded. The scraper-guide is arranged on the Schmutzfiuidtankeinrichtung or a cleaning roller holder for the at least one cleaning roller unit. It can thereby be positioned in a defined manner to the at least one cleaning roller unit. In one embodiment, the wiper guide is connected to the

Dirty fluid tank device removable from the cleaning head. This results in a simple structural design. Furthermore, the wiper guide can be cleaned in a simple manner. For example, then forms the stripping guide a wall of the entrance mouth.

It is advantageous if the wiping guide is rounded or chamfered at one of the inlet mouth facing edge. By such a rounding or chamfering the fibers of the trimming are better "protected" in the action of the stripping guide. It must be expended a lower torque for rotation of the cleaning roller unit, so that results in an energy-saving operation. In particular, the wiping guide is formed by one or more edge elements. The edge elements are strips which have corresponding edges which protrude in particular into the trimming of the at least one cleaning roller unit. The one or more edge elements can form a wall of the inlet mouth. In particular, an edge of an edge element is rounded or chamfered, with respect to a direction of rotation of the cleaning roller unit, this rounded or chamfered edge adjacent to the input mouth.

In one embodiment, the at least one cleaning roller unit is assigned at least one sweeping element, by which coarse dirt of the at least one cleaning roller unit can be fed and is entrained by this. The sweeping element ensures that "swept up" coarse dirt of at least one cleaning roller unit is supplied to take with you. This increases the scope of application of the surface cleaning machine.

In one embodiment, with respect to a direction of rotation of the at least one cleaning roller unit, the entrance mouth of

Schmutzfluidtankeinrichtung between the wiper guide and the positioned at least one cleaning roller unit associated sweeping element. As a result, dirt fluid can be absorbed by the surface to be cleaned. Furthermore, coarse dirt can be fed to the at least one cleaning roller unit. This takes the dirt along to the wiper guide. There dirt fluid is detached and can then be supplied to the inlet mouth of the dirty fluid tank means.

The at least one sweeping element is arranged, for example, on the dirty fluid tank device or a cleaning roller holder. This makes it possible to achieve a defined position in relation to the at least one cleaning roller unit.

In one embodiment, the cleaning head is pivotally mounted on the device body. This results in extended application possibilities. If, for example, there are tight spatial conditions, then the device body can be repositioned as required relative to the cleaning head due to the pivoting.

For example, the drive motor (for the at least one cleaning roller unit) is arranged on the device body outside of a device body housing or at least partially disposed in the device body housing. This results in a simple structural design. For example, an encapsulation of the drive motor can be used to form a pivot bearing.

In one embodiment, at least a first cleaning roller unit and a second cleaning roller unit are provided, wherein the first cleaning roller unit and the second cleaning roller unit are driven in opposite directions in rotation. This results in a high cleaning effect, since an area over (at least) two cleaning roller units can be acted upon. Each cleaning roller unit is assigned a separate stripping guide part. It can be provided that the first cleaning roller unit and the second cleaning roller unit is associated with at least one common tank of the dirty fluid tank device. This results in a simple structural design. But it is also possible that each cleaning roller unit is assigned a separate tank.

In one embodiment, the inlet mouth of the dirty fluid tank means has a longitudinal direction extending at least

is oriented approximately parallel to a rotation axis of the at least one cleaning roller unit. This results in a large cleaning area over the at least one cleaning roller unit with a corresponding large discharge area for dirt fluid.

In particular, the inlet mouth of the dirty fluid tank device has a length which corresponds at least to a stocking length of the at least one cleaning roller unit. This can effectively remove dirt fluid.

The surface cleaning machine according to the invention is designed in particular as a hand-held or hand-guided surface cleaning machine. An operator may preferably hold the surface cleaning machine with one hand.

The following description of preferred embodiments is used in conjunction with the drawings for further explanation of the invention. Show it :

Figure 1 is a perspective view of an embodiment of a surface cleaning machine according to the invention;

FIG. 2 shows a further perspective view of a cleaning head of the surface cleaning machine according to FIG. 1, wherein a connection to a device body is indicated; a side view of the cleaning head of Figure 2 with removed Schmutzfluidtankeinrichtung; a partial sectional view in the plane E of Figure 1; an enlarged view of the area A of Figure 4 with fixed Schmutzfluidtankeinrichtung; the same view as Figure 5, wherein a fixing device is in such a position that the Schmutzfluidtankeinrichtung is removable;

FIG. 7 shows the same view as FIG. 5 in an intermediate position; a perspective view of an embodiment of a Schmutzfluidtankeinrichtung;

9 shows a view of the dirty fluid tank device according to FIG. 8 in the direction B; FIG.

FIG. 10 shows a side view of the dirty fluid tank device according to FIG

8 in the direction C; and FIG. 11 shows a schematic sectional view of a cleaning head of a further exemplary embodiment of a surface cleaning machine according to the invention.

A first exemplary embodiment of a surface cleaning machine according to the invention, which is shown in FIG. 1 and is shown in partial representation in FIGS. 2 to 10 and designated 10, is designed in particular as a hand-held and hand-guided floor cleaning machine for hard floors. The surface cleaning machine 10 comprises a device body 12 and a cleaning head 14. The cleaning head 14 is arranged on the device body 12.

In a cleaning operation on a surface 16 to be cleaned, the surface cleaning machine 10 is supported by a cleaning roller unit 18 and in particular a single cleaning roller unit 18 on the surface 16 to be cleaned. The cleaning roller unit 18 has a single axis of rotation (see below). The cleaning roller unit 18 is a cleaning roller which may be one-piece or multi-piece. In the embodiment described below, the cleaning roller unit 18 is a two-part one

Cleaning roller. The device body 12 has a longitudinal axis 20. The surface cleaning machine 10 is stalked or stalk guided. For this purpose, a holding rod device 22 is seated on the device body 12.

In one embodiment, the holding bar means 22 comprises a (in particular exactly one) holding bar 24, which has a longitudinal extent parallel to the longitudinal axis 20. At an upper portion of the holding rod device 22, a handle 26 and in particular a bow handle is arranged. An operator can hold the surface cleaning machine 10 with one hand on this handle 26 and guide it on the surface 16 to be cleaned (with the cleaning roller unit 18 mounted on it).

The holding rod device 22 may be designed to be variable in length or length-fixed with respect to a length in the longitudinal axis 20. The surface cleaning machine 10 is dimensioned such that when the cleaning roller unit 18 is supported on the surface 16 to be cleaned, an operator can conveniently perform a cleaning operation on the surface 16 to be cleaned with an angled support arm. Especially For example, a length of the surface cleaning machine 10 in the longitudinal axis 20 between the cleaning roller unit 18 and the loop handle 26 is in a range between 60 cm and 130 cm. On the handle 26 in particular one or more operating elements are arranged. For example, a switch is arranged, via which the surface cleaning machine 10 can be switched on or off for a cleaning operation. Through this switch, the operation of a drive motor 28 for a rotational operation of the cleaning roller unit 18 is switchable bar. Furthermore, a switch for actuating a valve device 38 (see below) may be provided.

The device body 12 comprises a housing 30 in which components of the surface cleaning machine 10 are arranged protected.

On the housing 30, a holder 32 is arranged. On the holder 32, a tank means 34 for cleaning liquid (in particular water with or without an additional cleaning agent) is removably arranged. On the housing 30, a tank receptacle 36 for the tank device 34 is arranged on the holder 32. A corresponding outlet of the tank device 34 can be connected to the tank receptacle 36.

In the housing 30, the tank receptacle 36 is positioned downstream of a valve device 38.

Of the valve device 38, one or more fluid lines 40 lead to the cleaning head 14. The valve device 38 has a check valve, via which the supply of cleaning fluid from the tank means 34 to the cleaning head 14 is switchable lockable. The valve device 38 may be associated with a filter device 39 for cleaning fluid. The filter device 39 is in particular particular upstream of the check valve and disposed between the valve means 38 and the tank receptacle 36.

When the shut-off valve is open, cleaning liquid can flow out of the tank device 34 through the fluid line or fluid lines 40 to the cleaning head 14 and act on the surface 16 to be cleaned.

For this purpose, one or more outlet openings for cleaning liquid are provided on the cleaning head 14. It is in principle possible that the outlet or outlet orifices are arranged so that the surface to be cleaned 16 is applied directly with cleaning liquid.

In an advantageous variant, the outlet or outlet orifices are arranged so that the cleaning roller unit 18 and in particular a stocking 42 of the cleaning roller unit 18 is supplied with cleaning liquid. When the cleaning roller unit 18 is acted upon by cleaning fluid, the surface 16 to be cleaned is then indirectly exposed to cleaning fluid. The trim 42 is made in particular of a textile material.

The valve means 38 is associated with a switch by which the user can set whether the check valve of the valve means 38 is locked (that is, the inflow of cleaning liquid to the cleaning head 14 is locked), or whether the check valve is open (that is, the inflow for

Cleaning fluid from the tank means 34 is released to the cleaning head 14).

This switch can be arranged on the housing 30. It is also possible in principle that the switch is arranged on the handle 26.

In one embodiment, a battery device 44 for the electrical power supply of the drive motor 28 is arranged in the housing 30. The Battery device 44 is rechargeable. As a result, the surface cleaning machine 10 can be operated independently of a mains supply.

But it is also possible in principle that the surface cleaning machine 10 is operated by mains power. It is then arranged a corresponding connection device for mains power to the surface cleaning machine 10.

The battery device 44 can be detachable from the device body 12 in order to be able to carry out recharging on a corresponding charger.

It can also be provided that a corresponding charging device is integrated into the device body 12 and recharging is possible without removal of the battery device 44 from the device body 12. Corresponding connection sockets are arranged for example on the support rod 24.

The drive motor 28 is an electric motor. It has a motor shaft 46. The motor shaft 46 is coaxial with a rotation axis of the drive motor 28.

The drive motor 28 is seated between the cleaning head 14 and the housing 30 on the device body 12.

In one embodiment, the motor shaft 46 is oriented at an angle to the longitudinal axis 20 of the tool body 12 (and the support rod 24). The angle between the motor axis 46 and the longitudinal axis 20 is for example in the range between 150 ° and 170 °.

In one embodiment, the cleaning head 14 is pivotable about a pivot axis 48 (see Figures 2 and 3) with respect to the apparatus body 12. This pivoting is shown in Figure 2 by the double arrow with the

Reference numeral 50 indicated. In particular, the pivot axis 48 is coaxial with the motor axis 46.

In one embodiment, the drive motor 28 is disposed on an inner sleeve 52. This inner sleeve 52 preferably forms an encapsulation of the drive motor 28.

An inner sleeve 52 is seated in the outer sleeve 54. The inner sleeve 52 is pivotable about the pivot axis 48 relative to the outer sleeve 54, wherein the inner sleeve 52 is pivotally mounted in the outer sleeve 54. The inner sleeve 52 and the outer sleeve 54 form a pivot bearing 56 for the pivoting of the cleaning head 14 relative to the device body 12. The drive motor 28 is pivotable about the pivot axis 48 relative to the device body 12. Respective supply lines from the battery device 44 to the drive motor 28 are arranged and adapted to allow the pivoting. Accordingly, the fluid conduit 40 or the fluid conduits 40 are designed to allow this pivoting.

The pivot bearing 56 has a basic position, which is defined, for example, in that (the only) an axis of rotation 58 of the cleaning roller unit 18 is oriented perpendicular to the plane E according to FIG. A pivoting about the pivot axis 58 relative to this basic position is expressed in an angular position of the rotation axis 58 to the plane E.

The pivot bearing 56 is set in particular such that a relative to a normal cleaning operation requires special effort to effect a pivoting of the cleaning head 14 from its normal position.

The pivotability of the cleaning head 14 about the pivot axis 48 allows improved cleaning options even in less accessible places by the device body 12 to a certain extent with the holding rod direction 22 against the surface to be cleaned 16 can be "repositioned".

The cleaning head 14 has a cleaning roller holder 60, on which the cleaning roller unit 18 is rotatable about the rotation axis 58. The cleaning roller holder 60 is rotatably connected to the inner sleeve 52.

The cleaning roller holder 60 has a holding region 62 for the cleaning roller unit 18, and a receiving chamber 64 for a dirty fluid tank device 66 (cf., for example, FIG.

The receiving chamber 64 is positioned between the holding portion 62 and the inner sleeve 52. The inner sleeve 52 is in particular fixedly connected to an outer side of the receiving chamber 64.

The cleaning roller unit 18 is torque-effectively coupled to the drive motor 28 via a transmission device 68. The transmission device 68 operatively connects a motor shaft of the drive motor 28 (which rotates about the motor axis 46) to a shaft 70 for the cleaning roller unit 18.

The transmission device 68 comprises in one embodiment a speed reducer. This serves to reduce a speed in comparison to the speed of the motor shaft. For example, a

Standard electric motor speeds in the order of 7000 rpm. The speed reducer reduces the speed to, for example, about 400 revolutions per minute.

The speed reducer may be disposed in the inner sleeve 52 or outside the inner sleeve 52 on the cleaning roller holder 60. The speed reducer is designed for example as a planetary gear.

The transmission device 68 further comprises an angle gear, which provides for a torque deflection, to cause a drive of the cleaning roller unit 18 with the rotation axis 58 transversely (and in particular perpendicular) to the motor axis 46. The angular gear is in particular downstream of the speed reducer. In one embodiment, the angular gear on one or more gears, which are rotatably coupled to a corresponding shaft of the speed reducer. These act on a bevel gear for angular conversion. The transmission device 68 further includes, in one embodiment, a belt which is torque-operatively coupled to the bevel gear and acts on the shaft 70. The belt bridges the distance between the shaft 70 and the bevel gear and provides a speed reduction.

In one embodiment, the cleaning roller unit 18 is formed in two parts with a first part 72 and a second part 74. The first part 72 is non-rotatably mounted on a first side of the shaft 70 and the second part 74 is non-rotatably seated on one of the first side of the shaft 70 opposite the second Page.

In an intermediate region 76 between the first part 72 and the second part 74, the transmission device 68 is guided and coupled to the shaft 70. They have the same axis of rotation 58.

The cleaning roller unit 18 or the first part 72 and the second part 74 of the cleaning roller unit 18 have a sleeve 78 (cf., for example, FIG. 5), which is cylindrical. On the sleeve 78 is the stocking 42 arranged. About the sleeve 78, the cleaning roller unit 18 and the first part 72 and the second part 74 is fixed to the shaft 70. The cleaning roller unit 18 is arranged on the cleaning head 14 such that the rotation axis 58 is oriented perpendicular to the longitudinal axis 20.

The cleaning roller unit 18 has a length along the rotation axis 58 between a first end face 80 (which is formed on the first part 72) and a second end face 82 (which is formed on the second part 74), which is considerably larger than a corresponding width of the device body 12 perpendicular to the longitudinal axis 20. In particular, a length of the cleaning roller unit 18 between the first end face 80 and the second end face 82 is at least 20 cm and preferably at least 25 cm.

The receiving chamber 64 has a bottom 84 (see, for example, Figure 5). On the floor 84, a receiving chamber wall 86 is arranged transversely oriented to this. The receiving chamber wall 86 and the bottom 84 of the receiving chamber 64 define a receiving space 88 for the

Dirty fluid tank 66.

The bottom 84 opposite the receiving space 88 is open. Via a corresponding side 90, the dirty fluid tank device 66 can be removed from the receiving space 88 or inserted into it. A removal direction or insertion direction 92 (see FIG

Substantially perpendicular to the bottom 84 (and perpendicular to the axis of rotation 58).

In one embodiment, the receiving chamber wall 86 has a step 96 at a wall portion 94 of the receiving chamber wall 86. The wall region 94 in this case faces the holding region 62.

The step 96 is further disposed near the bottom 84. The receiving chamber 64 is associated with a fixing device 98, via which the Schmutzfluidtankeinrichtung 66 can be fixed to the receiving chamber wall 86 in a holding position 100 (Figure 5). The fixation takes place in particular by positive locking.

In one embodiment, the fixing device 98 comprises a flap 102, which is arranged pivotably about a pivot axis 104 by means of a pivot bearing 106 on the cleaning head 14. The pivot bearing 106 is positioned at or in the vicinity of the inner sleeve 52.

The pivot axis 104 is oriented parallel to the rotation axis 58 of the rotation roller 18. In the stop position 100, the flap 102 acts on the dirty fluid tank 66 and holds it against the receiving chamber 64 in the receiving space 88.

To remove the dirty fluid tank device 66 from the cleaning head 14, starting from this holding position 100, the flap 102 is pivotable in the direction of the device body 12 (cf., in Figure 6, indicated by the reference numeral 108) to release the Schmutzfluidtankeinrichtung 66, so that they in the removal direction 92 on the side 90 is removable from the receiving space 88 and is removable from the cleaning head 14.

The Schmutzfluidtankeinrichtung 66 (Figures 8 to 10) is formed as a unit. It has a first chamber 110, which is assigned to the first part 72 of the cleaning roller unit 18, and has a second chamber 112, which is assigned to the second part 74 of the cleaning roller unit 18.

The first chamber 110 receives dirty fluid originating from the first part 72 of the cleaning roller unit 18 and the second chamber 112 picks up dirt fluid coming from the second part 74 of the cleaning roller unit 18.

It is in principle possible for the first chamber 110 and the second chamber 112 to be connected to one another in a fluid-efficient manner, and in this case, for example, to be connected to a common discharge opening in a fluid-efficient manner.

It can also be provided that the first chamber 110 and the second chamber 112 are fluid-tightly separated from one another and each chamber 110, 112 has its own outlet opening.

The first chamber 110 and the second chamber 112 are spaced apart;

between the first chamber 110 and the second chamber 112, the Schmutzfluidtankeinrichtung 66 has a recess 114. The recess 114 is arranged with respect to a longitudinal extension axis 116 of the dirty fluid tank device 66 in a central region of the dirty fluid tank device 66. When the dirty fluid tank 66 is in the holding position 100 on the

Cleaning head 14 is fixed, then the longitudinal extension axis 116 is parallel to the axis of rotation 58 of the cleaning roller unit 18 oriented.

The longitudinal axis 116 of the dirty fluid tank 66 extends between a first outer end 118 and a second outer end 120 of the dirty fluid tank 66, with the dirty fluid tank 66 having its largest length dimensions between the first outer end 118 and the second outer end 120. The recess 114 is used to carry out at least a portion of the transmission device 68. The cleaning roller unit 18 is driven centrally. The transmission device 68 bridges the distance between the drive motor 28 and the shaft 70. The recess 114 saves on the Schmutzfluidtankeinrichtung 86 to a certain extent the space area, which receives the transmission device 68.

It can be provided that the receiving chamber 64 has a respective receiving space 88 for the first chamber 110 and the second chamber 112.

It is also possible that a common receiving space 88 is provided for the first chamber 110 and the second chamber 112.

The first chamber 110 and the second chamber 112 are connected to each other via a bridge 122, so that the dirty fluid tank device 66 forms a unit and as a whole is removable from the cleaning head 14 or can be inserted into it.

In one embodiment, the dirty fluid tank means 66 includes a lid flap 124 pivotally seated over spaced pivot bearings 126a, 126b on the first chamber 110 and the second chamber 112. The lid flap 124 can be opened to provide a corresponding discharge opening for the first chamber 110 and the second chamber 112 and, if appropriate, to be able to clean the dirty fluid tank device 66 in an interior space. In an embodiment shown in FIGS. 8-10, the first chamber 110 and the second chamber 112 are fluid tightly isolated from one another. The lid flap 124 is a common lid flap for both the first chamber 110 and the second chamber 112. By opening the lid flap 124, both the first chamber 110 and the second chamber 112 can then be emptied or access to the first chamber 110 and the second chamber 112 to perform a corresponding cleaning. The lid flap is with the first chamber 110 and / or the second

Chamber 112 and / or the bridge 122 can be fixed such that when the lid flap 124 is closed, a fluid-tight dirty fluid tank means 66 (except for an inlet mouth) is provided.

It is fundamentally possible for the dirty fluid tank device 66 to also comprise mechanically separate chambers, with one chamber then being assigned to the first part 72 and the second part 74 of the cleaning roller unit 18. In this case, the corresponding parts of the dirty fluid tank device must then be removed or used separately from the cleaning head 14.

The Schmutzfluidtankeinrichtung 66 has an underside 128 which is formed on an outer side of the bottom 84 respectively to the first chamber 110 and to the second chamber 112. It also has an underside 128 opposite top 130, which is formed on an outer side of the lid flap 124.

On the upper side 130 of the dirty fluid tank device 66 and thus on the cover flap 124, a recess 132 (or a plurality of recesses 132) is formed. The recess or recesses 132 are channel-shaped and have an undercut surface 134.

The flap 102 has a counter element 136 (or a plurality of counter elements 136), which serve for cooperation with the recess 132.

On the counter element 136 or the counter elements 136, a blocking element 138 is arranged (Figures 5 to 7), which serves for cooperation with the undercut surface 134. When the counter element 136 is immersed with its blocking element 138 in the recess 132 and the holding position 100 is reached, then the blocking element 138 bears against the undercut surface 134. As a result, the flap 102 is against pivoting away from the top 130 of the dirty fluid tank 66 blocked. A corresponding force must be applied to guide the blocking element 138 away from the undercut surface 134.

The dirty fluid tank 66 is positioned relative to the flap 102 and the receiving chamber 64 such that when the dirty fluid tank 66 is positioned in the holding position 100 on the receiving chamber 64, the blocking element 138 is immersed in the recess 132 and abuts the undercut surface 134 accordingly and thus the holding position 100 secures.

In one embodiment, the dirty fluid tank 66 has a stage 140 adapted to the stage 96 (see, for example, Figure 6).

When the dirty fluid tank 66 is inserted into the receiving space 88, the receiving chamber wall 86 blocks mobility of the dirty fluid tank 66 in the receiving space 88 in the transverse directions to the removing / inserting direction 92.

This positive locking is optionally supported by the steps 96, 140.

The bottom 84 of the receiving chamber 64 prevents "dousing" the Schmutzfluidtankeinrichtung 66 during insertion. When the flap 102 is closed and the blocking element 138 is positioned in the recess 132 against the undercut surface 134, movement is blocked parallel to the withdrawal direction 92 about the holding position 100 of the dirty fluid tank device 66 on the receiving chamber 64.

The flap 102 is designed in particular as a hold-down device, which ensures a defined positioning of the dirty fluid tank device 66 in relation to the cleaning roller unit 18. The flap 102 is in particular so elastically arranged or formed that in the holding position 100, the flap 102 exerts a corresponding positioning force and in particular the Schmutzfluidtankein- direction 66 against the bottom 84 and the wall portion 94 is pressed. The pressing against the wall portion 94 is also by

Cooperation of the stage 96 to the wall portion 94 with the stage 140 in the Schmutzfluidtankeinrichtung 66 supports.

It can be provided that the flap 102, for example, on the

Swivel bearing 106 is spring-supported. Alternatively or additionally, the flap 102 may be formed, for example, on the counter element 136 such that a corresponding elastic force can be exerted on the dirty fluid tank device 66.

The cleaning head 14 has a scraper guide 142 (see Fig. 5) which acts on the cleaning roller unit 18 (and thereby on the first part 72 and the second part 74) and serves to remove dirt fluid (in particular water) entrained by the cleaning roller unit 18 with dirt particles) and an inlet mouth 144 of the dirty fluid tank means 66, which is fixed in the holding position 100 to the cleaning head 14 supply. As a result, dirt fluid is then coupled into the dirty fluid tank device 66. The inlet mouth 144 of the dirty fluid tank device 66 has a slot-like design (FIG. 9). It includes a first portion 146, which is an entrance mouth for the first chamber 110, and includes a second portion 148, which is an entrance mouth for the second chamber 112. In the exemplary embodiment shown in FIG. 9, the first part 146 and the second part 148 each have a greater length in the longitudinal extension axis 116 than the associated chamber 110 or 112. The dirty fluid tank device 66 points at the end of the inlet mouth 144 the first part 146 and the second part 148, a respective wall to about the first part 146 and the second part 148 of the inlet mouth 144 collected dirt fluid of each of the first chamber 110th

or the second chamber 112 to be able to supply.

The first part 146 of the inlet mouth 144 is associated with the first part 72 of the cleaning roller unit 18. The second part 148 of the inlet mouth 144 is assigned to the second part 74 of the cleaning roller unit 18. The first part 146 and the second part 148 of the inlet mouth 144 are spaced from each other according to the spacing of the first part 72 and the second part 74.

Preferably, the first part 146 and the second part 148 each have a length in the longitudinal extension axis 116, which at least

Approximately corresponds to a corresponding stocking length of the first part 72 and the second part 74 of the cleaning roller unit 18 along the axis of rotation 58.

The scraper diverter 142 is configured to scrape dirt fluid therefrom from the cleaning roller unit 18 and into the entrance mouth 144.

It is possible that when rotating cleaning roller unit 18, a conductive effect on the effect of the centrifugal force is achieved and to some extent dirt fluid is thrown into the Schmutzfluidtankeinrichtung 66.

The scraper guide 142 is spaced from the axis of rotation 58.

In one embodiment (cf., for example, FIG. 5), the wiping guide device 142 protrudes with a depth T into the stocking 42 of the cleaning roller unit 18. The depth T is in particular at least 5% of a thickness D (FIG. 5) of the stocking 42 Cleaning roller unit 18 based on a wet condition of the stocking 42. The wiping guide 142 is in particular formed by one or more edge elements 150. For example, the first part 72 and the second part 74 of the cleaning roller unit 18 is associated with a respective edge element 150.

An edge element 150 is designed as a strip, which protrudes into the stocking 42 of the cleaning roller unit 18 on the first part 72 and the second part 74 accordingly.

The edge element 150 has a relatively small thickness, which is in particular smaller than a thickness D of the trim 42.

In one embodiment, the edge element 150 or the edge elements 150 are curved.

The scraper guide 142 with the edge member 150 or the

Edge elements 150 forms in particular a wall of the entrance mouth 144.

The edge element or elements 150 are rounded or chamfered at an edge which faces the entrance mouth 144. As a result, fibers of the stocking 42 are spared and it must be overcome in the rotation of the cleaning roller unit 18 a small force. This in turn achieves an energy-saving effect. This rounding at the edge is indicated by the reference numeral 151 in FIG.

It may in principle be provided that the wiping guide 142 is arranged on the cleaning roller holder 60.

In the embodiment shown, the scraper guide 142 is seated on the dirty fluid tank 66. This has a wall 152, which faces the wall region 94 in the holding position 100. The edge element (s) 150 are disposed on the corresponding wall 152 of the first chamber 110 and the second chamber 112.

The corresponding stripping guide device 142 is preferably arranged outside the cover flap 124 of the dirty fluid tank device 66.

In this embodiment, the scraper guide 142 is removed from the cleaning head 14 when the dirty fluid tank 66 is removed therefrom.

It is further contemplated that at the cleaning head 14 of the cleaning roller unit 18 associated with a cover 154 is positioned. The cover 154 is subsequently arranged on the stripping guide 142 (with the edge element or elements 150). The edge element 150 is curved so that it is adapted to a corresponding curvature of the cleaning roller unit 118 with the stocking 42. Basically, the cover 154 may touch or penetrate the trim 42, preferably penetrating to a lesser depth than the penetration of the scraper guide 142 across the depth T.

In one embodiment, the fluid line 40 opens or open the fluid lines 40 in a region 156 between the cover 154 and the scraper-guide 142. In this area, the cleaning roller unit 18 can be acted upon with cleaning liquid from the tank means 34. In particular, the region 146 has a length along the axis of rotation 58 which at least approximately corresponds to a corresponding length of the first part 72 and the second part 74 of the cleaning roller. unit 18 to allow a uniform liquid loading of the cleaning roller unit 18 over its length.

In the embodiment shown, the cover 154 is at the

Dirty fluid tank means 66 arranged.

It must then be taken accordingly that a suitable

Coupling of the fluid line 40 or fluid lines 40 is reached. Based on a rotational direction 158 (see FIG. 5) of the cleaning roller unit 18 in a cleaning operation, the wiping guide 142 with its edge element 150 or its edge elements 150 is arranged downstream of the inlet mouth 144. This is a "slinging" of dirty fluid, which was previously taken by the cleaning roller unit 18 from the surface to be cleaned 16 and was transported in the direction of the scraper-guide 142, via the scraper-guide 142 in the inlet mouth 144 and thereby in the Dirt fluid tank 66 allows. The cleaning roller unit 18 is in one embodiment further associated with a sweeping element 160, which serves to coarse dirt of the

To supply cleaning roller unit 18. This can then with the

Cleaning roller unit 18 are taken. The entrance port 144 is disposed between the stripper baffle 142 on the sweeping element 160.

In the embodiment shown, the sweeping element 160 is positioned on the cleaning roller holder 60 at the holding portion 62. The sweeping element 160 is designed so that it at least in an angular position range (if the surface cleaning machine 10 is not too steep) of the surface cleaning machine 10 with respect to the longitudinal axis 20 to the zu cleaning surface 16 can act on the surface 16 to be cleaned for the sweeping function.

The sweeping element 160 is arranged, for example, pivotably on the cleaning roller holder 60 and / or it is designed to be elastic.

In particular, the sweeping element 160 projects into the stocking 42 of the cleaning roller unit 18. However, it can also touch the stocking 42 or be spaced apart from it.

Based on the direction of rotation 158 of the cleaning roller unit 18, when it is driven by the drive motor 28 in its rotational movement, the sweeping element 160, followed by a guide portion 162 of the cleaning roller holder 60, which in its form (hollow) cylindrical follows on the surface 16 to be cleaned and is adapted to the cleaning roller unit 18, then the entrance mouth 144, thereon the wiper guide 142 with the edge element (s) 150 and then the cover 154, the area 156 between the cover 154 and the wiper guide 142.

In the embodiment shown, the surface cleaning machine 10 is formed without a suction fan. Dirt fluid, which is entrained by the cleaning roller unit 18 is not sucked by an additional suction fan in the dirty fluid tank means 66, but the

Wiper guide 142 alone ensures that dirt fluid in the

Schmutzfluidtankeinrichtung 66 is coupled.

In principle, it is also possible that the coupling is still supported by an additional suction fan.

The surface cleaning machine 10 works as follows: In a cleaning operation, the dirty fluid tank 66 is fixed to the cleaning head 14 in the holding position 100.

For a cleaning process, the surface cleaning machine 10 is placed alone on the cleaning roller unit 18 on the surface 16 to be cleaned. The drive motor 28 drives the cleaning roller unit 18 in a rotational movement about the (single) rotation axis 58 in the direction of rotation 158. The cleaning roller unit 18 is supplied with cleaning fluid from the tank device 34.

Dirt on the surface 16 to be cleaned is moistened when the moistened stocking 42 of the cleaning roller unit 18 acts on it to facilitate its releasability.

The rotation of the cleaning roller unit 18 causes a mechanical action on dirt on the surface 16 to be cleaned in order to obtain better detachability from the surface 16 to be cleaned.

Any coarse dirt can be supplied to the sweeping element 160 of the cleaning roller unit 18.

Dirt fluid (dirt particles, cleaning liquid with dissolved dirt) is taken by the cleaning roller unit 18 and on the scraper guide 142, the dirty fluid from the cleaning roller unit 18 is released and (among other things, under the action of centrifugal force) into the inlet port 144 and passes from there into the Dirtfiidtankinrichtung 66. The wiper guide 142 provides by stripping for a solution of dirt fluid from the stocking 42 of the cleaning roller unit 18th

The coupling of dirt fluid into the Schmutzfiuidtankeinrichtung 66 takes place in particular without suction fan. The dirty fluid tank 66 is detachably positioned on the cleaning head 14. The flap 102 provides a backup of the stop position 100. In the stop position 100, the inlet mouth 144 of the dirty fluid tank 66 is also aligned relative to the cleaning roller unit 18 in relation to the wiper guide 142 so that the corresponding release function and engagement function is achieved as described above.

The flap 102, with its function as a hold-down device, ensures that the edge element 150 or the edge elements 150 with the depth T are correspondingly pressed into the stocking 42 in order to achieve an optimum stripping function by stripping.

In particular, the scraper guide 142 is disposed on the Schmutzfiuidtankeinrichtung 66 and detachable therefrom of the cleaning head 14. The flap 102 pushes with its counter-element 136 and the blocking element 138 disposed thereon on the top side 130 of the dirty fluid tank device 66 and thereby secures the holding position in which the above-described relative positioning of the scraper-guide 142 to the cleaning roller unit 18 is achieved.

A positive retention of the dirt refueling means 66 on the receiving chamber 64 in the holding position 100 is provided.

To remove the Schmutzfiuidtankeinrichtung 66 (Figure 3, Figures 6, 7), the flap 102 is opened. It is pivoted in the direction of the device body 12. In order to guide the blocking element 138 out of the recess 132 with the undercut surface 134, a corresponding elastic deformation of the counter element 136 must be carried out. When the flap 102 (FIG. 6) is completely open, the dirty fluid tank 66 can then be removed (compare FIG. 3). By opening the cover flap 124 of the dirty fluid tank device 66, it can be emptied and optionally cleaned, for example, by rinsing.

The dirty fluid tank device 66 has, for example, a capacity of approximately 150 ml.

The surface cleaning machine 10 has a relatively low energy requirement, since no suction fan must be provided and dirt fluid is coupled directly from the cleaning roller unit 18 with "minimized path" in the dirt fluid tank means 66.

The surface cleaning machine 10 can therefore be operated optimally with a rechargeable battery device 44. By the surface cleaning machine according to the invention can be a

Wet cleaning of hard floors with a high degree of automation. The force required during wiping is reduced or eliminated by the mechanical support via the driven rotation roller 18. The moistening of the cleaning roller unit 18 makes it possible

Operator to perform a cleaning operation without having to

Dirt fluid comes into contact.

In addition, in a cleaning operation, self-cleaning of the cleaning roller unit 18 follows to some extent.

The dirty fluid tank 66 is disposed between the cleaning roller unit 18 and the drive motor 28. A longitudinal extension direction of the entrance mouth 144 which is parallel to the longitudinal axis 116 is parallel to the axis of rotation 58 of the cleaning roller unit 18 and transversely and in particular perpendicular to the motor axis 46. Further, this longitudinal axis of the entrance mouth 144 is transverse and in particular perpendicular to the longitudinal axis 20th

It may be provided that the drive motor 28 is also used to drive one or more suction turbines, which are respectively in fluid communication with an interior of the dirty fluid tank means 66 to create a negative pressure that enhances the coupling of dirty fluid into the dirty fluid tank means ,

In principle, the surface cleaning machine 10 can also be operated in network operation. The sweeping element 160 may also be disposed on the dirty fluid tank 66.

It may be provided an overload protection. This is designed for example as a mechanical overload protection, which includes, for example, a slip clutch. It may alternatively or additionally be provided an electronic overload protection, which performs, for example, an overcurrent trip.

In a normal cleaning operation, the tank device 34 is arranged above the cleaning head 14 with respect to the direction of gravity.

As a result, cleaning fluid can flow under the effect of gravity from the tank device 34 to the cleaning head 14 in a pump-free manner in order to act on the surface 16 to be cleaned directly or indirectly via the cleaning roller unit 18 with cleaning fluid.

The surface cleaning machine 10 may be formed so that the sweeping element 160 is effective only when a certain angular position with respect to the longitudinal axis 20 is adjusted to the surface to be cleaned 16 and in particular, an angle between the surface 16 to be cleaned and the longitudinal axis is below a maximum angle.

Another embodiment of a surface cleaning machine 202 according to the invention (FIG. 11) comprises a cleaning head 204.

At the cleaning head 204, a first cleaning roller unit 206 is arranged rotatably about a first axis of rotation 208. Further, spaced from the first cleaning roller unit 206 on the cleaning head 204, a second cleaning roller unit 210 is rotatably disposed about a second rotation axis 212. The first rotation axis 208 and the second rotation axis 212 are oriented parallel to each other.

In the illustrated embodiment, the cleaning roller units 206 and 210 are each integrally formed cleaning rollers.

The surface cleaning machine 202 has a drive for the first cleaning roller unit 206 and the second cleaning roller unit 210. In one embodiment, a drive 214 is disposed on the cleaning head 204.

The drive acts directly or via a gear mechanism on the first cleaning roller unit 206 and the second cleaning roller unit 212 such that they rotate in opposite directions.

In the embodiment shown in FIG. 11, the first cleaning roller unit 206 has a first rotational direction 216 and the second cleaning roller unit 210 has a second rotational direction 218 which is opposite to the first rotational direction 216.

At the cleaning head 204, a dirty fluid tank device 220 is arranged. In one embodiment, the dirty fluid tank 220 has a common tank 222 for the first cleaning roller unit 206 and the second cleaning roller unit 210. The tank 222 has an inlet mouth 224. This sits down

together from a first part 226 associated with the first cleaning roller unit 206 and a second part 228 associated with the second cleaning roller unit 210. The first part 226 and the second part 228 are aligned parallel to each other and oriented parallel to the rotation axes 208, 212.

Via the first part 226 of the inlet mouth 224, dirt fluid entrained by the first cleaning roller unit 206 can be coupled into the tank 222. Via the second part 228 of the inlet mouth 224, dirt fluid entrained by the second cleaning roller unit 210 can be coupled into the tank 222.

At the cleaning head 204, a scraper guide 230 is arranged. The stripping guide 230 comprises corresponding edge elements 232, which are arranged on the first part 226 of the inlet mouth 224 and on the second part 228 of the inlet mouth 224.

As described above with reference to the surface cleaning machine 10, the edge elements 232 protrude at a specific depth into a trim of the first cleaning roller unit 206 or of the second cleaning roller unit 210.

Relative to the first rotational direction 216 and the second rotational direction 218, respectively, the edge elements 232 are arranged downstream of the first part 226 and the second part 228 of the inlet mouth 224. They have the same functionality as the edge elements 150 described above. They form a wall of the parts 226, 228 of the entrance mouth 224. Furthermore, the first cleaning roller unit 206 is associated with a first sweeping element 234 and the second cleaning roller unit 210 is associated with a second sweeping element 236.

In particular, the first cleaning roller unit 206 and the second cleaning roller unit 210 are positioned between the first sweeping element 234 and the second sweeping element 236.

The first sweeping element 234 and the second sweeping element 236 are preferably fixed to a cleaning roller holder 238 holding the first cleaning roller unit 206 and the second cleaning roller unit 210.

The first sweeping element 234 and the second sweeping element 236 have the same function as the sweeping element described with reference to the surface cleaning machine 10.

The tank 222 is formed, for example, removable. It may also be firmly positioned on the cleaning head 204.

In one embodiment, a device body about a pivot axis 240 via a pivot bearing 242 pivotally to the cleaning head 204. The device body is indicated in Figure 11 by the reference numeral 244th

When the surface cleaning machine 202 is guided with the cleaning head 204 over a surface to be cleaned, then act on this surface to be cleaned, both the first cleaning roller unit 206 and the second

Cleaning roller unit 210. By the opposite rotation results in a high cleaning effect. Dirt fluid (dirt particles, cleaning liquid possibly with dissolved dirt) is taken along by the first cleaning roller unit 206 and the second cleaning roller unit 210. By the scraper-guide 230 in the same manner as described above dirt fluid from the first cleaning roller unit 206 and the second cleaning roller unit 210 is released and coupled to the respective first part 226 and second part 228 of the inlet mouth 224 in the Schmutzfluidtankeinrichtung 220. The Schmutzfluideinkopplung takes place without fan.

The entrance mouth 224 is in close proximity to the first

Cleaning roller unit 206 and the second cleaning roller unit 210 arranged.

Reference surface cleaning machine

device body

cleaning head

Area to be cleaned

Cleaning roller unit

longitudinal axis

Retaining bar means

retaining bar

Handle

drive motor

casing

holder

Tank device for cleaning fluid tank receiver

valve means

filtering device

fluid line

trimming

battery means

motor axis

swivel axis

double arrow

inner sleeve

outer sleeve

pivot bearing

axis of rotation

Cleaning roller holder

holding area

receiving chamber

Dirty fluid tank means transmission device

wave

First part

Second part

intermediate area

shell

First front page

Second front side

ground

Aufnahmekammerwandung

accommodation space

page

Removal / insertion

wall region

step

fixing device

hold

flap

swivel axis

pivot bearing

direction

First chamber

Second Chamber

recess

Longitudinal axis of extension

First outer end

Second outer end

bridge

flap

a swivel bearing

b swivel bearing

bottom

top 132 recess

134 undercut surface

136 counter element

138 blocking element

140 level

142 Wiper guide

144 entrance mouth

146 First part

148 Second Part

150 edge element

151 Rounding off, chamfering

152 wall

154 cover

156 area

158 direction of rotation

160 sweeping element

162 management area

202 surface cleaning machine

204 cleaning head

206 First cleaning roller unit

208 First rotation axis

210 Second cleaning roller unit

212 Second axis of rotation

214 drive

216 First direction of rotation

218 Second direction of rotation

220 dirty fluid tank device

222 tank

224 Entrance estuary

226 First part of the entrance mouth

228 Second part of the entrance mouth

230 Wiper guide

232 edge element 234 First sweeping element

236 Second sweeping element

238 Cleaning roller holder

240 pivot axis

242 pivot bearings

244 device body

Claims

claims

Surface cleaning machine comprising a device body (12; 244), and a cleaning head (14; 204) which is arranged on the device body (12; 244), wherein on the cleaning head (14; 204)

at least one driven cleaning roller unit (18; 206, 210) is positioned and a dirt fluid tank device (66; 220) is arranged on the cleaning head (14; 204) and a drive motor (28; 214), characterized in that the at least one cleaning roller unit ( 18, 206, 210) is associated with a scraper guide (142, 230) which acts on the at least one cleaning roller unit (18, 206, 210) such that the scraper guide (142, 230) is located at an entrance mouth (144, 224) and the scraper guide means (142; 230) is arranged and configured such that dirt fluid from the at least one cleaning roller unit (18; 206, 210) is discharged via the input mouth (18; ) the dirty fluid tank device (66; 220) can be coupled into the dirty fluid tank device (66; 220).

A surface cleaning machine according to claim 1, characterized in that the wiping guide (142; 230) is arranged and arranged to receive dirt fluid received from the at least one cleaning roller unit (18; 206,210) by the wiping guide (142; 230) is stripped from the at least one cleaning roller unit (18; 206,210) and directed into the dirty fluid tank means (66; 220).

3. surface cleaning machine according to claim 1 or 2, characterized in that relative to a rotational direction (158; 216, 218) of the at least one cleaning roller unit (18; 206, 210), the stripping guide (142; 230) of the inlet mouth (144 ; 224) is subordinate.

4. Surface cleaning machine according to one of the preceding

Claims, characterized in that the stripping guide (142; 230) projects into a trimming (42) of the at least one cleaning roller unit (18; 206, 210).

5. surface cleaning machine according to claim 5, characterized in that the stripping guide (142; 230) having a depth (T) of at least 5% of a thickness (D) of the trim (42) in the trim (42) of at least a cleaning roller unit (18; 206, 210) with respect to a wet trimming (42) protrudes.

6. Surface cleaning machine according to one of the preceding

Claims, characterized in that the scraper guide (142; 230) is disposed on the dirty fluid tank means (66; 220) or a cleaning roller holder.

A surface cleaning machine according to claim 6, characterized in that the wiping guide (142; 230) is removable from the cleaning head (14; 204) with the dirty fluid tank means (66; 220).

8. Surface cleaning machine according to one of the preceding

Claims, characterized in that the wiping guide (142; 230) at one of the inlet mouth (144; 224) facing edge is rounded or chamfered.

9. Surface cleaning machine according to one of the preceding

Claims, characterized in that the wiping guide (142; 230) is formed by one or more edge elements (150; 232).

10. Surface cleaning machine according to one of the preceding

Claims, characterized in that the at least one cleaning roller unit (18, 206, 210) at least one sweeping element (160, 234, 236) is assigned, by which coarse dirt of the at least one cleaning roller unit (18, 206, 210) can be fed and entrained by this is.

A surface cleaning machine according to claim 10, characterized in that with respect to a direction of rotation (158; 216, 218) of the at least one cleaning roller unit (18; 206,210) interposes the entrance mouth (144; 224) of the dirty fluid tank means (66; 220) the wiping guide (142, 230) and the sweeping element (160, 234, 236) associated with the at least one cleaning roller unit (18, 206, 210).

12. Surface cleaning machine according to claim 10 or 11, characterized

in that the at least one sweeping element (160; 234, 236) is arranged on the dirty fluid tank device or a cleaning roller holder (60; 238).

13. Surface cleaning machine according to one of the preceding

Claims, characterized in that the cleaning head (14; 204) is pivotally mounted on the device body (12; 244).

14. Surface cleaning machine according to one of the preceding

Claims, characterized in that the drive motor (28) on the device body (12) outside a device body housing (30) or at least partially in the device body housing (30) is arranged.

15. Surface cleaning machine according to one of the preceding

Claims, characterized by at least a first cleaning roller unit (206) and a second cleaning roller unit (210), wherein the first cleaning roller unit (206) and the second cleaning roller unit (210) are driven in opposite directions in rotation.

16. surface cleaning machine according to claim 15, characterized in that the first cleaning roller unit (206) and the second cleaning roller unit (210) at least one common tank (222) of the dirty fluid tank means (220) is associated.

17. Surface cleaning machine according to one of the preceding

Claims, characterized in that the inlet mouth (144; 244) of the dirty fluid tank device (60; 220) has a longitudinal extension direction which is at least approximately parallel to an axis of rotation (58 208, 212) of the at least one cleaning roller unit (18; ) is oriented.

18. Surface cleaning machine according to one of the preceding

Claims, characterized in that the inlet mouth (144; 244) of the dirty fluid tank means (60; 220) has a length which corresponds at least to a stocking length of the at least one cleaning roller unit (18; 206,210). Surface cleaning machine according to one of the preceding

Claims, characterized by a training as a hand-held or hand-held surface cleaning machine.